A couple of past posts on the numismatics of the relevant New Testament passage (Mark 12:13-17 and parallels) are here and here.
By the way, Matthew has been blogging since 2012. I know I have seen his blog before, but I don't seem to have linked to it. It looks like it has some stimulating posts. Cross-file under Assimilated to the Blogosphere (Belatedly Noted).
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